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Home > Products and services > CSIRTUK advisories > Advisories archive > May 2005 > Two Gentoo Linux Security Advisories: 1. GLSA 200505-03 - Ethereal: Numerous vulnerabilities 2. GLSA 200505-04 - GnuTLS: Denial of Service vulnerability

May 2005

Two Gentoo Linux Security Advisories: 1. GLSA 200505-03 - Ethereal: Numerous vulnerabilities 2. GLSA 200505-04 - GnuTLS: Denial of Service vulnerability

ID: 00389
Ref: 359/2005
Date: 09 May 2005:15:45:27
Version: 1
Title: Two Gentoo Linux Security Advisories: 1. GLSA 200505-03 - Ethereal: Numerous vulnerabilities 2. GLSA 200505-04 - GnuTLS: Denial of Service vulnerability
Abstract: 1. There are numerous vulnerabilities in versions of Ethereal prior to 0.10.11. 2. A vulnerability has been discovered in the record packet parsing in the GnuTLS library. Additionally, a flaw was also found in the RSA key export functionality.
Vendors affected: Gentoo
Operating systems affected: Gentoo
Applications affected: Gentoo
Title
=====

Two Gentoo Linux Security Advisories:

1. GLSA 200505-03 - Ethereal: Numerous vulnerabilities

2. GLSA 200505-04 - GnuTLS: Denial of Service vulnerability

Detail
======

1. There are numerous vulnerabilities in versions of Ethereal prior to
0.10.11.

2. A vulnerability has been discovered in the record packet parsing in the
GnuTLS library. Additionally, a flaw was also found in the RSA key
export functionality.



1.



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Gentoo Linux Security Advisory GLSA 200505-03
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http://security.gentoo.org/
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Severity: High
Title: Ethereal: Numerous vulnerabilities
Date: May 06, 2005
Bugs: #90539
ID: 200505-03

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Synopsis
========

Ethereal is vulnerable to numerous vulnerabilities potentially
resulting in the execution of arbitrary code or abnormal termination.

Background
==========

Ethereal is a feature rich network protocol analyzer.

Affected packages
=================

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-analyzer/ethereal < 0.10.11 >= 0.10.11

Description
===========

There are numerous vulnerabilities in versions of Ethereal prior to
0.10.11, including:

* The ANSI A and DHCP dissectors are vulnerable to format string
vulnerabilities.

* The DISTCC, FCELS, SIP, ISIS, CMIP, CMP, CMS, CRMF, ESS, OCSP,
PKIX1Explitit, PKIX Qualified, X.509, Q.931, MEGACO, NCP, ISUP, TCAP
and Presentation dissectors are vulnerable to buffer overflows.

* The KINK, WSP, SMB Mailslot, H.245, MGCP, Q.931, RPC, GSM and SMB
NETLOGON dissectors are vulnerable to pointer handling errors.

* The LMP, KINK, MGCP, RSVP, SRVLOC, EIGRP, MEGACO, DLSw, NCP and
L2TP dissectors are vulnerable to looping problems.

* The Telnet and DHCP dissectors could abort.

* The TZSP, Bittorrent, SMB, MGCP and ISUP dissectors could cause a
segmentation fault.

* The WSP, 802.3 Slow protocols, BER, SMB Mailslot, SMB, NDPS, IAX2,
RADIUS, SMB PIPE, MRDISC and TCAP dissectors could throw assertions.

* The DICOM, NDPS and ICEP dissectors are vulnerable to memory
handling errors.

* The GSM MAP, AIM, Fibre Channel,SRVLOC, NDPS, LDAP and NTLMSSP
dissectors could terminate abnormallly.

Impact
======

An attacker might be able to use these vulnerabilities to crash
Ethereal and execute arbitrary code with the permissions of the user
running Ethereal, which could be the root user.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Ethereal users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose ">=net-analyzer/ethereal-0.10.11"

References
==========

[ 1 ] Ethereal enpa-sa-00019
http://www.ethereal.com/appnotes/enpa-sa-00019.html
[ 2 ] CAN-2005-1456
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-1456
[ 3 ] CAN-2005-1457
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-1457
[ 4 ] CAN-2005-1458
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-1458
[ 5 ] CAN-2005-1459
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-1459
[ 6 ] CAN-2005-1460
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-1460
[ 7 ] CAN-2005-1461
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-1461
[ 8 ] CAN-2005-1462
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-1462
[ 9 ] CAN-2005-1463
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-1463
[ 10 ] CAN-2005-1464
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-1464
[ 11 ] CAN-2005-1465
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-1465
[ 12 ] CAN-2005-1466
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-1466
[ 13 ] CAN-2005-1467
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-1467
[ 14 ] CAN-2005-1468
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-1468
[ 15 ] CAN-2005-1469
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-1469
[ 16 ] CAN-2005-1470
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-1470

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

http://security.gentoo.org/glsa/glsa-200505-03.xml

Concerns?
=========

Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
http://bugs.gentoo.org.

License
=======

Copyright 2005 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

http://creativecommons.org/licenses/by-sa/2.0


2.

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Gentoo Linux Security Advisory GLSA 200505-04
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http://security.gentoo.org/
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Severity: Normal
Title: GnuTLS: Denial of Service vulnerability
Date: May 09, 2005
Bugs: #90726
ID: 200505-04

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Synopsis
========

The GnuTLS library is vulnerable to Denial of Service attacks.

Background
==========

GnuTLS is a free TLS 1.0 and SSL 3.0 implementation for the GNU
project.

Affected packages
=================

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 net-libs/gnutls < 1.2.3 >= 1.2.3
*>= 1.0.25

Description
===========

A vulnerability has been discovered in the record packet parsing in the
GnuTLS library. Additionally, a flaw was also found in the RSA key
export functionality.

Impact
======

A remote attacker could exploit this vulnerability and cause a Denial
of Service to any application that utilizes the GnuTLS library.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All GnuTLS users should remove the existing installation and upgrade to
the latest version:

# emerge --sync
# emerge --unmerge gnutls
# emerge --ask --oneshot --verbose net-libs/gnutls

Due to small API changes with the previous version, please do the
following to ensure your applications are using the latest GnuTLS that
you just emerged.

# revdep-rebuild --soname-regexp libgnutls.so.1[0-1]

Previously exported RSA keys can be fixed by executing the following
command on the key files:

# certtool -k infile outfile

References
==========

[ 1 ] GnuTLS Announcement
http://lists.gnupg.org/pipermail/gnutls-dev/2005-April/000858.html
[ 2 ] CAN-2005-1431
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-1431

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

http://security.gentoo.org/glsa/glsa-200505-04.xml

Concerns?
=========

Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
http://bugs.gentoo.org.

License
=======

Copyright 2005 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

http://creativecommons.org/licenses/by-sa/2.0
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